I just installed my new pcm yesterday that i got from pcmofnc.com and i couldnt be happier. It has improved the performance tremendously! I hold the revs longer and stays in gear longer. it down shifts alot easier now and idles much smoother. I dont know yet if it has improved my mpg's. ill have to wait until i fill up and then reset my trip meter then do the numbers when i fill up the following time. I'll have to try and keep my foot of the pedal so much tho. lol
Do the pcmforless and you will be pleased. just becarfull when your removing and reinstalling the wireharness' tho. I was an idiot and broke the locking mech on one of mine and now i have to have a piece of wood holding it in there. It was a pain trying to find a new one.